Mold for casting metal ingots.



V G- F. DOWNS.

MOL D FOR CASTING METAL INGOTS.

APPLICATION FILED DEC. 11.1915.

1,1 74,131. Patented Mar. 7,1916.

| i l l l l I V y I 1 i I!!!)IIIIIIIIIIII III 1 Metal Ingots; and do hereby declare that of reference marked thereon, which f orm a e'aoaeun uowrrs, "or-numeric, NEW

Munroe-charms Marat incurs.

Totall whom it may concern.

of Buifalo, in the county of Erieand Stateof New York haveinvented certain newand useful Improvements in Molds for Casting the following isa fulL-cleam and exact description thereof, reference being had to the-- accompanying drawings, and to the lettelih part of this specification.

This invention relates to improvements molds for casting metal in'gots and consists of the matters hereinafter -described =and more particularly pointed outn'n the zip:

; pended claims. j l

I 7 minimum the usual cavityor pocketat the v The obj ect of thei invention, is to produce i idithe pur pose describedjo f'such constructio .thatthe cooling and solidification of thej hotff metal forming the ingot is retarded toward the,

top of the mold, so astoprevent mama- ,tion of blow holes, pipes, fissures and the like in the body of the-ingot and to reduceto a top of the ingot.

' time.

In the drawings z Figure l is a view side elevation of a moldfor use in casting metal ingots made in accordancewith my invention. Fig. 2 is avertical sectional view, the plane of the section beingindicated by the line 2-42 of Fig. 1. Fig. 3' is a'horizontal sectional view, the planeof thesection being indicated by the line 3.-3 ofFig. 2.

Referring now in detail to that' emhodh. .ment of my invention illustrated in the accompanying drawings indicates the body of the mold, which inloses the chamber 6 in which the ingot is cast." The body of the mold, made usually of cast iron, is as shown substantially rectangular in cros sectionan is made tapering toward the.top, the,c'hamher 6 tapering in a like manner. The bottom end of the chamber 6 in which the ingot is cast is closed by a stool 7 which forms the bottom wall and support for the'mold.

' 8 indicates'a metal sleeve whichis 4 to be supported or hung from the topedge of the mold, and which is of the smas e 1 heat conducting" material, although "this PatentediMar; t,- 1916.

j sectional form as the mold but of larger size Be it known that I, Gnome-F. Downma; citizen of the United States, and a resident so as to provide a jacket space 9 about the upper part of the mold. Said sleeve" prefer- :ably incloses nearly 'one half. of the length wardly from the flange 11 andispaced from the mold a sufficient distance to allow for "expansion, while at the .same time prevent-- mg displacement of the sleeve; The. flange 11 defines the pouring opening orjmouth 12 for the mold chamber 6,-and provides aclosureor-seal for; the top of the ja'chetsphce linin 13 of fire brickor other suitable-11011 notesisential,

1ft indicatejs'a closure or seal for the-b0 tomjxend ofthejacket space 9. This includes rin' l5 'having a horizontal web16 formed tofclosely engage the outside surface joffthe fmold in-a plane a short distance belqw the bottom .,-of the sleeve 8,, and having an up s right flange l7 surrounding and [spaced vertically .Th right flange 17 of the ring and the adjacent Wall oft he. mold define a trough into which;,

from the sleeve 8 :and extending above the planeof its'bottomen The sleeve 8 is preferablyrcessedflas illustrated on its inner surface, toireceive a the bottom end of the sleeve 8' dependssandff which providesrsupport for a. packing ring the bottom end of the jacket space 9.

In preparing the mold for use, 15 is placed upon the mold body and lathe? trough. thus provided is filled. with the cl or loam to form the packing ring or seall8 :18 of non-heat conducting material suchiasf' 1 ordinary clay or loam which effectually seals! loam packing. Pressure isthen brought; to I 1 -bear upon the topend of -tllei sleey 8 t force its bottom end .into are said' packing" down'upon the top of the meld. A closed insulating air jacket is thus the top of the mold.

fbr ned about period'oftime, since the bottom part of the l b,o i peing thickest, will absorb more loft ghee rom the molten metal and tend ire seal acts to conserve the insulating air inthis chamber for a considerable period of mtime', thus retarding the cooling and conse quently the solidification of the metal foin'n ing the ingot in the top of the chamber (1. In this manner the molten metal forming the ingot retained in a liquid state for a considerable period of time.

of cooling the molten metal being thus retarded, there is time for the hot metal to flow and to assume new relations as it cools and for the air and gases trapped in the 2 molten metal in the process of pouring to work upwardly and out of the liquid mass, thus preventing the formation of blow holes,

. and like in'i nzrfcctions as well as elevating the shrinkage cavity to the top of the ingot.

To provide lugs for stripping my improved mold by means of any standard stripping machine, I adopt the following construction: 20, indicate removable hoolis or lugs. Each book or lug is in lilo 3o form of a verticalljif alrangcd lnir o'r strap .Zl, 531. Said bar is pivoted at its bottom end to laterally projecting spaced ears formed on. opposite sides of the mold body. below that part of said body engaged by the sealing ring 153. ll. removable axis pin 23 iivotally connects each bar to the associated ears. ".lho top rnd of each bar is bent out wardly to provide a. book .15, and the bottom end cl each bar is formed to provide 40 a heel ii-l adapted to on cage against the mold body and limit the outward swing of the lugs. npon its pivot pin as illustrated by the dotted lines in Fig. 2. i

it is apjjiarcnt that should the body of the mold become craclzcd or otherwise unfit for use, the stripping lugs may be removed therefrom and placed upon new moldsl The sleeve 8, after once being adjusted to or placed upon a mold remains thereon until the mold Wears out, when it may be removed as a. whole together with the seal ring and placed upon a new mold.

My improved mold on account of its simple construction commercially practical and usable and the insulating sleeve thereof presents a substantial top which can in no manner be damaged by the uncontrolled flow of molten metal from the ladle which sometimes occurs during the pouring operation. a

I am aware that several molds have been designed to accomplish the aim attained by my improved construction, but theyare too expensive to make them commercially .ga usable as they have to be adjusted to and The process removed from the mold body before and after the pouring of each ingot and require attention during the solidilication of the ingot within the mold.

I claim as my invention 1. A mold for casting ingots, comprising in combination with the mold body, a sleeve surrounding the top part of the mold body and inclosing a jacket space about the same, said sleeve having an inturned ll: ige -at its upper end resting upon the top'end oil the mold body, and means for sealing the' bottom end of said sleeve against the adjacent part of the mold body to close the bottom end of said jacket space. A mold for casting ingots, comprising in combination with the mold body, a sleeve surrounding the top part of the m )ld body and inclosing a jacket space about the same, said sleeve having an inturned flange at its upper end resting upon the top end of the mold body and defining the pouring opening of the mold. and means for sealing the bottom end of said sleeve against the adja cent part of the mold body to close the bottom end of said jacket space.

3. A mold for casting ingots comprising in combination with the mold bod y, a sleeve surrounding the top part of the mold body and inclosing a jacket space about the same, sa1d sleeve having an inturned flange at its upper end resting upon the top end of the mold body, and being provided with a depending shoulder below said tango enibracing but spaced a short distance :lr'om the top end of the mold to allow for expansion of the same and means for sealing the bottom end of said sleeve against the adjacent part of the moldhody to close the bottom end of said jacket space.

A mold for casting ingots, comprising in combination with-the mold body, a sleeve surrounding the top part of the mold body and inclosing a jacket spam about the some, said sleeve having a" inturned liangeat its upper end resting the top end olf' the mold body, and m. ans or sealing the bottom end of said slce. against the adjacent part oi 'thc mold body to close the bottom rod of said jacket space, said means consisting of a ring providing in conjunction with said body a trough into which the bottom cndof said slecye depends and a pacl ing of clay or loam within which the bottom end of said sleeve is embedded.

5. A mold for casting ingots, comprising in combination with the mold body, a sleeve surrounding the top part of the mold body and inclosing a jacket space about the same, said sleeve having an inturned flange at its up er end resting upon the top end of the mo d body, a ring having ahorizontal web engagedabout the body of the mold and an upright flange spaced from and projectiri a ove the bottom and of the sleeve, anyl a seal of loam or clay supported by said ring in which seal the bottom end of said sleeve is embedded.

6. A mold for casting ingots, comprising in combination with the mold body, a sleeve surrounding the top part of the .mold body and supported from the upper end thereof, said sleeve inclosing a jacket space about said mold body, and detachableextension stripping lugs attached to said mold body in a plane below the end of said sleeve.

7. A mold for casting ingots, comprising in combination with the mold body, a sleeve surrounding the top part of the mold body and inclosing a jacket space about the same, said sleeve having an inturned flangeat its upper end resting upon the top end of the mold body, means forsealing the bottom end of said sleeve against the adjacent part' of the mold body to close the bottom end of said jacket space, and detachab'le'extension strinoing lugs pivoted to the mold body in a plane below the end of said sleeve.

8. A mold for casting ingots, comprising in combination with the mold body, a sleeve surrounding the top part'of the mold body and inclosing a jacket space about the same,

said sleeve having an inturned flange at its upper end resting upon the top end of the mold body, means for sealing the bottom end of said sleeve against the adjacent part of the mold body to close the bottom end of said jacket space, spaced earsmarle rigid with the mold body in a plane below the 1 end of said sleeve, extension stripping lugs extending from said ears to the top of said .mold body, and removable pivot pins for attaching said stripping lugs to said ears.

.9. A mold for casting ingots, comprising in combination-with the mold body, a sleeve surrounding the top part of the mold body,

and inclosing a j acket'spa'ce about the same, said sleeve having an anturned flangev to close the top of said jacket space, and means for supporting a loam or clay seal in the plane of the bottom end of the sleeve to.

close the bottom ofsaid jacket space.

10. A mold for casting ingots,comprising in combination With the 'mold body, a

sleeve surrounding the top part of the mold body and inclosing a jacket space about the same, said sleeve having an inturned flange at its upper end resting upon'the top end of the" mold body, said sleeve having '1tsinner silrface recessed to provide a channel 4 surrounding said, jacket space,;a fire brick lining insaidchannel, and means for sealing the bottom end ofsaidsleeve against the adjacent part of the mold body to close the bottom end of said jacket space.

In testimony that I claim the foregoing as my invention I afi'ix my signature in the" 

